Glossary · Product
Product-Market Fit (PMF)
Product-Market Fit is the point where a product satisfies strong market demand, evidenced by retention, referral, and organic pull.
Product-Market Fit is the point where a product satisfies strong market demand, evidenced by retention, referral, and organic pull.
Definition
Worked example
Superhuman used the Sean Ellis 40% test throughout 2017–18 and only shipped broader marketing after crossing it in a specific persona (managers who process high email volume).
Common mistakes
- — Declaring PMF from vanity metrics (signups, MAU) instead of retention and referral.
- — Scaling paid acquisition before PMF — this burns capital hiding poor retention.
- — Assuming PMF, once achieved, is permanent. It decays as markets shift.
Frequently asked questions
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